The correct answer for the question that is being presented above is this one: "B. a decrease in pressure." At divergent plate boundaries in the ocean, magma rises and melts because of<span> a decrease in pressure. The magma rises and melts as the divergent plate boundaries in the ocean decreased in pressure.</span>
The last option is the answer. D.Montevideo is the capital of Uruguay or country #7
Answer would be B. Earthquakes happen most of the time when a volcano is about to erupt.